/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.model.actor.knownlist;

import java.util.Collection;
import java.util.Map;

import javolution.util.FastList;
import javolution.util.FastMap;
import net.sf.l2j.gameserver.model.L2Character;
import net.sf.l2j.gameserver.model.L2Object;
import net.sf.l2j.gameserver.model.actor.instance.L2MonsterInstance;
import net.sf.l2j.gameserver.model.actor.instance.L2NpcInstance;
import net.sf.l2j.gameserver.model.actor.instance.L2PcInstance;
import net.sf.l2j.gameserver.util.Util;

public class CharKnownList extends ObjectKnownList {
	// =========================================================
	// Data Field
	private Map<Integer, L2PcInstance> _knownPlayers;
	private Map<Integer, Integer> _knownRelations;

	// =========================================================
	// Constructor
	public CharKnownList(L2Character activeChar) {
		super(activeChar);
	}

	// =========================================================
	// Method - Public
	@Override
	public boolean addKnownObject(L2Object object) {
		return addKnownObject(object, null);
	}

	@Override
	public boolean addKnownObject(L2Object object, L2Character dropper) {
		if (!super.addKnownObject(object, dropper))
			return false;
		if (object instanceof L2PcInstance) {
			getKnownPlayers().put(object.getObjectId(), (L2PcInstance) object);
			getKnownRelations().put(object.getObjectId(), -1);
		}
		return true;
	}

	/**
	 * Return true if the L2PcInstance is in _knownPlayer of the L2Character.<BR>
	 * <BR>
	 * 
	 * @param player
	 *            The L2PcInstance to search in _knownPlayer
	 */
	public final boolean knowsThePlayer(L2PcInstance player) {
		return getActiveChar() == player
				|| getKnownPlayers().containsKey(player.getObjectId());
	}

	/**
	 * Remove all L2Object from _knownObjects and _knownPlayer of the
	 * L2Character then cancel Attak or Cast and notify AI.
	 */
	@Override
	public final void removeAllKnownObjects() {
		super.removeAllKnownObjects();
		getKnownPlayers().clear();
		getKnownRelations().clear();
		// Set _target of the L2Character to null
		// Cancel Attack or Cast
		getActiveChar().setTarget(null);
		// Cancel AI Task
		if (getActiveChar().hasAI())
			getActiveChar().setAI(null);
	}

	@Override
	public boolean removeKnownObject(L2Object object) {
		if (!super.removeKnownObject(object))
			return false;
		if (object instanceof L2PcInstance) {
			getKnownPlayers().remove(object.getObjectId());
			getKnownRelations().remove(object.getObjectId());
		}
		// If object is targeted by the L2Character, cancel Attack or Cast
		if (object == getActiveChar().getTarget())
			getActiveChar().setTarget(null);
		return true;
	}

	// =========================================================
	// Method - Private
	// =========================================================
	// Property - Public
	public L2Character getActiveChar() {
		return (L2Character) super.getActiveObject();
	}

	@Override
	public int getDistanceToForgetObject(L2Object object) {
		return 0;
	}

	@Override
	public int getDistanceToWatchObject(L2Object object) {
		return 0;
	}

	public Collection<L2Character> getKnownCharacters() {
		FastList<L2Character> result = new FastList<L2Character>();
		for (L2Object obj : getKnownObjects().values())
			if (obj instanceof L2Character)
				result.add((L2Character) obj);
		return result;
	}

	public Collection<L2Character> getKnownCharactersInRadius(long radius) {
		FastList<L2Character> result = new FastList<L2Character>();
		for (L2Object obj : getKnownObjects().values())
			if (obj instanceof L2PcInstance) {
				if (Util.checkIfInRange((int) radius, getActiveChar(), obj,
						true))
					result.add((L2PcInstance) obj);
			} else if (obj instanceof L2MonsterInstance) {
				if (Util.checkIfInRange((int) radius, getActiveChar(), obj,
						true))
					result.add((L2MonsterInstance) obj);
			} else if (obj instanceof L2NpcInstance)
				if (Util.checkIfInRange((int) radius, getActiveChar(), obj,
						true))
					result.add((L2NpcInstance) obj);
		return result;
	}

	public final Map<Integer, L2PcInstance> getKnownPlayers() {
		if (_knownPlayers == null)
			_knownPlayers = new FastMap<Integer, L2PcInstance>().shared();
		return _knownPlayers;
	}

	public final Map<Integer, Integer> getKnownRelations() {
		if (_knownRelations == null)
			_knownRelations = new FastMap<Integer, Integer>().shared();
		return _knownRelations;
	}

	public final Collection<L2PcInstance> getKnownPlayersInRadius(long radius) {
		FastList<L2PcInstance> result = new FastList<L2PcInstance>();
		for (L2PcInstance player : getKnownPlayers().values())
			if (Util.checkIfInRange((int) radius, getActiveChar(), player, true))
				result.add(player);
		return result;
	}
}
